- ____ - Yes.
设x,y满足约束条件,{x≥0x+2y≥32x+y≤3则z=x-y的最大值是( )
I often go shopping with my father on the weekend.
若点(1﹣2m,m﹣4)在第三象限内,则m的取值范围是____.
下列有关误差的说法中.正确的是 ( )